Senate Report 114-146: Tsunami Warning, Education, and Research Act of 2015, Report of the Committee on Commerce, Science, and Transportation on H.R. 34, September 22, 2015 [open pdf - 361KB]
"A tsunmai is a set of ocean waves caused by abrupt movement of the ocean floor, initiated by earthquakes, volcanic eruption, meteor strikes, or underwater landslides that can have devastating impacts to coastlines and coastal communities, sometimes within minutes of a disturbance. Tsunami waves can hit coastlines near where they are generated, or they can travel for thousands of miles, at speeds up to 600 miles per hour and impact areas far from the location of the disturbance. [...] Currently the uses of real-time, deep ocean detectors that can directly detect tsunami waves and data from seismic gauges combined with models are essential for early detection. These relatively recent developments, in conjunction with continuing community education, have been shown to reduce the loss of life. [...] In the wake of such a disaster, Congress began to discuss the circumstance surrounding the Indian Ocean tsunami and the international capabilities for tsunami detection and warning. In 2006, Congress passed the Tsunami Warning and Education Act (P.L. 109-424) that directed the Administrator of NOAA [National Oceanic and Atmospheric Administration] to operate a tsunami detection, forecasting, and warning program for the Pacific and Arctic Ocean regions and for the Atlantic Ocean, Caribbean Sea, and Gulf of Mexico region. The legislation also directed NOAA to establish a tsunami hazard mitigation program to improve preparedness of at-risk areas in the United States."
Senate Report 114-146
U.S. Government Printing Office: http://www.gpo.gov/